Read the press release for the upcoming episode of Fringe, ‘Letters of Transit’! The 19th episode of past seasons have traditionally been pretty out there, so what can we expect this year?

Fox released the following description:

The FRINGE tradition of a mind-bending 19th episode continues as the story jumps ahead to 2036, when the Observers and the Fringe team engage in a game-changing battle.

We also know that Lost‘s Henry Ian Cusick will be guest starring as a new Fringe agent. This definitely sounds exciting, particularly since we’ve already seen Peter flash forward to the 2020s (although we imagine that this timeline has been erased now).